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Date:      Thu, 04 Feb 1999 23:32:26 +0100
From:      Poul-Henning Kamp <phk@critter.freebsd.dk>
To:        Adam David <adam@veda.is>
Cc:        nate@mt.sri.com, adam@FreeBSD.ORG, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG
Subject:   Re: cvs commit: src/sys/i386/conf GENERIC 
Message-ID:  <939.918167546@critter.freebsd.dk>
In-Reply-To: Your message of "Thu, 04 Feb 1999 22:21:24 GMT." <199902042221.WAA18634@veda.is> 

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In message <199902042221.WAA18634@veda.is>, Adam David writes:
>> This should be backed out, the correct fix for these systems is to
>> 
>> 	sysctl -w kern.timecounter.method=1
>
>Fair enough, but it should be documented somewhere obvious (i.e. as an
>agreeable comment in GENERIC) to keep POLA. I certainly didn't expect the
>removal of apm to mess up the timecounter.

Are you sure you don't have APM enabled in the BIOS ?

Having apm in your kernel should not affect the timecounting unless
it manages to attach to the APM bios, in which case the i8254 is
used rather than the TSC for timecounting.

That would explain you "factor 32" thing as well, your APM bios is
slowing your CPU to save power...

--
Poul-Henning Kamp             FreeBSD coreteam member
phk@FreeBSD.ORG               "Real hackers run -current on their laptop."
FreeBSD -- It will take a long time before progress goes too far!

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